A stopper for deformable containers, incorporating an elastic diaphragm dispenser with a self-closing orifice, and method for the manufacture thereof.

WE PRESENT A PLUG FOR DEFORMABLE CONTAINERS THAT INCLUDES A DISPENSING DEVICE IN THE FORM OF AN ELASTIC DIAPHRAGM (21) THAT HAS AT LEAST ONE CUT THAT FORMS A SELF-CLOSING HOLE THAT IS OPENED TO LEAVE A PRODUCT PRESENT INSIDE THE CONTAINER WHICH IS MADE TO MEASURE A DEFAULT PRESSURE IS APPLIED TO THE CONTAINER FROM THE EXTERIOR, AND IT IS AUTOMATICALLY CLOSED BY CUTTING THE SUPPLY OF THE PRODUCT WHEN THE PRESSURE STOPS. DIAPHRAGM (21) IS PERMANENTLY SUBJECT IRREVERSIBLY TO AN INNER TAB (12) OF THE TUBULAR WALL (2) READY TO FIT WITH THE CONTAINER AND DESCAT, WITHOUT ADHERING TO IT, ON THE CONVEX SURFACE 1) OF THE PLUG THAT IS SEPARATELY CONNECTED TO THE TUBULAR WALL (2) AND CONSTITUTES AN ELEMENT OF TEMPORARY COATING. THE ELASTIC DIAPHRAGM (2) IS FORMED THROUGH A MOLDING PROCESS CARRIED OUT DIRECTLY INSIDE THE CAVITY OF THE PLUG USING A DEFAULT AMOUNT OF A THERMOPLASTIC, SEVERE-RUBBER MATERIAL, COMPRESSED AGAINST THE INTERIOR SURFACES OF THE INTERIOR AND PERMANENTLY ON THE EDGE (20) OF THE DIAPHRAGM (21) TO ADJUST TO THE TAB (12) OF THE TUBULAR WALL (2) AND MAKE IT SEPARABLE FROM THE UPPER WALL (1) OF THE PLUG, THEN PERFORMING AT LEAST ONE CUT IN THE AREA CORRESPONDING TO SUCH UPPER WALL OF THE PLUG. IN THIS WAY, THE ADVANTAGE CONSISTS OF BEING ABLE TO MANUFACTURE THE CAP AND THE SELF-CLOSING DISPENSING DEVICE IN A UNITARY WAY, FORMING THE ELASTIC DIAPHRAGM OF A THERMOPLASTIC MATERIAL.